JPH0933195A - Firing apparatus for article processed with heat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To ensure secure replacement work of an article processed with heat such as a smoke candle by providing two switches for interrupting an operation of an operation member releasing an engagement between a lock member and a fixing member and interrupting a circuit interlocking with an operation piece moving beyond a contact position wit the fixing member. SOLUTION: For replacing a smoke candle a lock pin 43 is pulled from a hole 39 in a lock shaft to release an engagement between the lock pin 43 and the lock shaft 38, and an engagement between the lock shaft 38 and cover 34 is released to replace a new one. In the replacement work a first switch 31 is turned off by turning a tab to a replacement position while a second switch 32 is turned off by pulling the lock shaft 38 from a through-hole 24 to permit an operation piece 44 to be projected into the through-hole 24. Accordingly, even when a firing circuit is interrupted with the two switches 31, 32 and a firing switch of an operation apparatus is turned on, no firing current is supplied to the smoke candle to securely prevent the smoke current from being unexpectedly fired.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the invention
The present invention relates to an ignition device that prevents inadvertent ignition during replacement of pyrotechnics.

[0002]

2. Description of the Related Art An ignition device for igniting a pyrotechnic product such as a smoke producing device is, for example, as shown in FIG. 8 and FIG. Stand 2
0 is connected by a cable 5, and the operating device 10
The smoke tube 1 is ignited by remote control from. FIG.
In the conventional ignition device shown in FIG. 1, the smoke tube 1 with the tangent 2 drawn out is inserted into the insertion part 21 provided upright on the device base 20, and the contact plug 3 at the tip of the tangent 2 is placed on the base 20. The smoke producing tube 1 is held on the base 20 by being fitted to the provided connector seat 22.

Then, as shown in FIG. 9, the operating device 10
Is equipped with a power source 11 and an ignition switch 12, and the power source 11
A circuit in which the ignition switch 12 and the ignition switch 12 are connected in series is connected to the base 20 side via the cable 5. On the side of the base 20, the cable 5 is connected to the smoke hood 1 via the contact plug seat 22, the contact plug 3, and the tangent wire 2, and an ignition circuit that connects the power supply 11 of the operating device 10 to the smoke hood 1 is configured. . The ignition switch 12 provided in the ignition circuit is normally in the off state, and when the operator pushes the ignition button 13 of the operating device 10, the ignition switch 12 is turned on,
Ignition current is supplied from the power supply 11 to the smoke producing tube 1 through the ignition circuit to ignite the smoke producing tube 1.

The used smoke-producing cylinder 1 which is ignited to emit smoke and is used as described above is replaced with a new smoke-producing cylinder by an operator's replacement work. In this replacement work, the connector 3 is removed from the connector seat 22, the used smoke tube 1 is extracted from the insertion portion 21, and then a new smoke tube is inserted into the insertion portion 21 to connect the plug 3 Is fitted into the connector seat 22.

[0005]

Here, in the above-described smoke tube replacement work, after the connector 3 of the new smoke tube is fitted to the connector seat 22 and the smoke tube is connected to the ignition circuit. If the ignition switch 12 is accidentally turned on, the smoke tube may inadvertently emit smoke. In such a case, there is a problem that the replacement work has to be performed again during the replacement work, and the replacement work becomes complicated.

The present invention has been made in view of the above-mentioned conventional circumstances, and an object of the present invention is to provide a pyrotechnic product igniting device that ensures reliable replacement work of pyrotechnic products such as smoke tubes.

[0007]

In order to achieve the above object, a pyrotechnic ignition device according to the present invention comprises a base having an ignition circuit for holding a pyrotechnic and igniting the pyrotechnic, and a base. In a pyrotechnic ignition device comprising an operating device connected to a table via a cable and transmitting an ignition signal to the ignition circuit,
A locking member for engaging the pyrotechnic product on the base to prevent the pyrotechnic product from coming off, and a movement of the locking member for engaging the pyrotechnic product and engaging the pyrotechnic product. A fixed member, a lock member that engages with the fixed member to prevent movement of the fixed member, and an operation member that is connected to the lock member to release the engagement with the fixed member by driving the lock member, An operating piece that abuts the fixing member while the locking member is engaged with the fixing member, an elastic member that urges the operating piece toward the fixing member, and an operating member that is provided in the ignition circuit and is the locking member. A first switch that interrupts the circuit in conjunction with the operation of releasing the engagement with the fixing member, and a circuit that is provided in the ignition circuit and interlocks with the operation piece moving beyond the contact position with the fixing member. And a second switch for shutting off the switch.

[0008]

In the pyrotechnic ignition device of the present invention, the pyrotechnic held on the base is prevented from coming off by engaging the locking member. When exchanging a new pyrotechnic, It is necessary to move the locking member to release the engagement. In this case, the movement of the locking member is blocked by engaging the fixing member, and the operator needs to move the fixing member to release the engagement with the locking member. Movement is prevented by the engagement of the locking members. The lock member and the fixed member can be disengaged by the operation of the operation member by the operator. Therefore, the operation of the operation member by the operator enables the movement of the fixed member and the movement of the locking member. It is possible to release the stopper and remove the pyrotechnic from the base.

As described above, in order to make the pyrotechnic product removable from the base, as the operation member is operated, the first switch provided in the ignition circuit is turned off to interrupt the circuit, Prevent ignition of pyrotechnics during replacement of pyrotechnics. Further, in the state where the movement of the locking member is blocked as described above, the operation piece is urged and abutted against the fixing member, and the fixing member is released to release the blocking of the movement of the locking member. As the operation piece is moved, the operation piece is moved by the urging force. Along with the movement of the operation piece, the second switch provided in the ignition circuit is turned off to shut off the circuit and prevent the pyrotechnic product from being ignited during the replacement work of the pyrotechnic product.

That is, when exchanging pyrotechnics, the operator operates the operating member to move the fixing member,
The locking member is moved to release the engagement with the pyrotechnic. Along with this operation, the first switch and the second switch cut off the ignition circuit to prevent accidental ignition of the pyrotechnic product. Further, even if the operator mistakenly operates the operation member to turn on the first switch during the replacement work, the second switch remains in the off state. Inadvertent ignition is prevented.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A pyrotechnic ignition device according to an embodiment of the present invention will be described with reference to the drawings. The same parts as those in the conventional example described above are designated by the same reference numerals, and duplicate description will be omitted. The pyrotechnic product ignition device of the present embodiment has the configuration shown in FIGS. 1 to 7, and the base 20 holds the smoke producing tube 1 as the pyrotechnic product,
It is connected to the operating device 10 via the cable 5.

The base 20 has a plug seat 22, a plug 3, and a tangent 2
An ignition circuit connected to the smoke stack 1 via the power source 11 built in the operating device 10 is incorporated.
And a series circuit of the ignition switch 12 via a cable 5. A first switch 31 and a second switch 32 are provided in the ignition circuit built in the base 20, and the ignition circuit can be shut off by the on / off operation of these switches 31 and 32. .

A lid 34 as a locking member is openably and closably provided at one end of the base 20 by a pivot 33, and a hole 35 having a diameter slightly smaller than the outer diameter of the smoke producing tube 1 is formed in the lid 34. ing. Therefore, by closing the lid 34, the insertion portion 21 and the plug portion are covered and protected from wind and rain, and the smoke producing tube 1 loaded in the insertion portion 21 has its smoke emitting end face exposed to the outside through the hole 35. To do. Further, since the hole 35 has a smaller diameter than the outer diameter of the smoke producing tube 1, the smoke producing tube 1 is engaged with the hole edge portion of the lid 34 when the lid 34 is closed, and the insertion portion 21 is inserted.
From being trapped.

A pair of blocks 36 are provided at the tip of the lid 34, and the blocks 36 have through holes 37 of the same diameter and the same diameter. On the other hand, the base 20
The convex portion 23 is provided at the end portion corresponding to the block 36 of the above, and the convex portion 23 has a through hole 24 corresponding to the through hole 37.
Are formed. Therefore, in the state where the lid 34 is closed, the blocks 36 are fitted on both sides of the convex portion 23 and the through holes 37 are formed.
And the through hole 24 are continuous. The ignition device of the present embodiment is provided with a lock shaft 38 as a fixing member that engages with the lid 34, and the lock shaft 38 can be inserted into the through hole 37 and the through hole 24. Therefore, the lid 3
4 is closed and the lock shaft 38 is inserted into the through hole 37 and the through hole 24.
6 is engaged to prevent movement (rotation) of the lid 34 in the opening direction. Note that the lock shaft 38 is formed with a hole 39 for retaining or the like described later.

A concave portion 40 is formed on the end surface of the base 20 on the side where the convex portion 23 is provided, and a knob 41 as an operating member is rotatably provided in the concave portion 40. The knob 41 is connected to the rotary type first switch 31. By rotating the knob 41 to two positions of "operation" and "exchange", the first switch 3 is correspondingly moved.
1 is switched between an on state and an off state. As shown in FIGS. 5 to 7 showing the cross-sectional structure of the end of the base, as shown in FIGS.
A cam 42 is provided on the rotation shaft of the lock shaft 38
The lock pin 43 as a lock member that restricts the movement of the is engaged. The lock pin 43 is provided on the base 20 so as to be movable in the axial direction, and is pushed by the cam 42 when the knob 41 is set to the “actuated” position so that the lock pin 43 projects into the through hole 24 from the right angle direction. To do.

The lock pin 43 has a diameter smaller than that of the hole 39 provided in the lock shaft 38, and the lock pin 43 is projected when the cover 34 is closed and the lock shaft 38 is inserted into the through hole 37 and the through hole 24. Is to be inserted into the hole 39. Therefore, when the knob 41 is set to the “operating” position with the closed lid 34 locked by the lock shaft 38, the lock pin 43 engages with the lock shaft 38 to move the lock shaft 38 as shown in FIG. It is supposed to block.

An operating piece 44 is provided on the base 20 so as to be movable in the axial direction, and the tip of the operating piece 44 can project into the through hole 24 at a right angle. The base end of the operation piece 44 is connected to the second switch 32, and when the tip of the operation piece 44 projects into the through hole 24, the second switch 32 is turned off, and the operation piece 44 is retracted so that the tip end of the operation piece 44 is retracted. The second switch 32 is turned on when the second switch 32 is retracted to the outside of the through hole 24.

A compression spring 46 as an elastic member is interposed between the bracket 45 which mounts the second switch 32 on the base 20 and the operation piece 44, and the operation piece 44 has a tip end by this spring 46. It is constantly biased in a direction projecting into the through hole 24. Therefore, as shown in FIG. 4, in the state in which the lock shaft 38 is inserted into the through hole 37 and the through hole 24 and the closed lid 34 is locked, the operation piece 44 is not locked.
Is pressed against the urging force to be pushed back, and the second switch 3
2 is turned on, while the lock shaft 3 is turned on as shown in FIG.
In the state of being pulled out from the through hole 37 and the through hole 24, the operating piece 44 protrudes into the through hole 24 beyond the contact position with the lock shaft 38 by the urging force, and turns off the second switch 32.

According to the ignition device having the above-described structure, as shown in FIG. 4, the lid 34 is normally closed, the lock shaft 38 is inserted through the through hole 37 and the through hole 24, and the knob 41 is "operated".
When the lock pin 43 is turned to the position, the lock pin 43 is inserted into the hole 39 of the lock shaft 38.
Are engaged, the lock shaft 38 is prevented from coming off, and the closed lid 34 is locked. In this state, the first switch 31 is in the on state, and the second switch 32 is also in the on state because the operation piece 44 is in contact with the lock shaft 38 and pushed down. Therefore, when the operator turns on the ignition switch 12 by pressing the ignition button 13 of the operation device 10,
Ignition current is supplied from the power supply 11 to the smoke producing tube 1 through the ignition circuit to ignite the smoke producing tube 1.

Next, in the work of replacing the used smoke tube, first, the knob 41 is turned to the "replacement" position, the lock pin 43 is pulled out from the hole 39 of the lock shaft, and the lock pin 4 is pulled out.
The engagement between 3 and the lock shaft 38 is released. Then, the lock shaft 38 is pulled out from the through hole 37 and the through hole 24 to release the engagement between the lock shaft 38 and the lid 34, and the lid 34 is opened to replace the smoke producing tube 1 with a new one. During this replacement work,
By turning the knob 41 to the “exchange” position, the first switch 31 is turned off, and the lock shaft 38 is pulled out from the through hole 24 so that the operating piece 44 projects into the through hole 24. 32 is turned off.
Therefore, even if the ignition circuit is cut off by the two switches 31 and 32 and the ignition switch 12 of the operating device 10 is turned on, the ignition current is not supplied to the smoke producing tube 1 and the smoke producing tube 1 is careless. Ignition is reliably prevented.

Here, in the above replacement work, the knob 4
1 remains in the "actuated" position (ie, the first switch 31
And the second switch 32 remain on) Lock shaft 38
When attempting to pull out from the through hole 37 and the through hole 24, since the lock pin 43 is engaged with the lock shaft 38, pulling out of the lock shaft 38 is prevented, and the operator can recognize an erroneous operation. Inadvertent ignition of the smoke producing tube 1 due to such an erroneous operation is eliminated in advance.

After the replacement with the new smoke producing tube 1, the lid 34 is closed, the lock shaft 38 is inserted into the through hole 37 and the through hole 24, and the knob 41 is turned to the "operating" position for replacement. Finish the work. By inserting the lock shaft 38, the operation piece 4
4 is pushed down and the second switch 32 is turned on, the rotation of the knob 41 prevents the lock shaft 38 from coming off, and the first switch 31 is turned on.
Therefore, when the replacement work is completed in this way, the ignition switch 12 of the operating device 10 is turned on to supply an ignition current from the power supply 11 to the smoke producing tube 1 to remotely operate the smoke producing tube 1. Can be ignited by.

Here, in the above operation, when the knob 41 is turned to the "actuated" position without mounting the lock shaft 38 on the through hole 37 and the through hole 24 after closing the lid 34, Although the switch 31 is turned on, as shown in FIG. 6, the lock shaft 38 abuts the lock pin 43 protruding into the through hole 24 to prevent the lock shaft 38 from being inserted into the through hole 24. This allows erroneous operation to be recognized. Further, in this case, since the lock shaft 38 cannot be inserted into the through hole 24, the operation piece 44 biased by the spring 46 is in a state of protruding into the through hole 24, and the second switch 3
2 is off. Therefore, the ignition circuit is cut off by the second switch 32, and the inadvertent ignition of the smoke producing tube 1 due to such an erroneous operation is eliminated in advance.

Further, in the above work, as shown in FIG. 7, when the lock shaft 38 is inserted into the through hole 24 with the lid 34 left open, the operation piece 44 is pushed down to the second position. The switch 32 is turned on, but the knob 41 remains in the "exchange" position, so the first switch 31
Is in the off state, the ignition circuit is cut off by the first switch 31, and the inadvertent ignition of the smoke tube 1 due to such an erroneous operation is canceled in advance. Further, in this case, the hole 39 of the lock shaft and the lock pin 43 are displaced from each other and the lock pin 43 cannot be moved upward. Therefore, turning the knob 41 to the "actuated" position is prevented, the first switch 31 is held in the OFF state, and the operator can recognize the erroneous operation.

Therefore, according to the above-mentioned ignition device,
If an operator makes a mistake in the operation of replacing the smoke tube 1, the operator can be made to recognize the mistaken operation promptly, and the ignition circuit is shut off to prevent accidental ignition of the smoke tube 1. be able to. Further, in the ignition device of this embodiment, since the lid 34 is used as the locking member that engages with the smoke producing tube 1 to prevent the smoke producing tube 1 from coming off, the smoke producing tube 1, the tangent line 2 and the connecting plugs 3 and 22 are connected. Covered by the lid 34, these parts are protected against wind and rain, and the smoke tube 1 is prevented from coming off due to the overturning of the base 20.

In the above embodiment, the lid 34 is shown as a locking member for preventing the smoke emitting tube 1 from coming off from the base 20, but, for example, a frame type engagement member which engages with the upper end of the smoke emitting tube 1. A stop member can be used, and the point is that the form of the locking member is not particularly limited as long as it can be engaged with the smoke producing tube 1 loaded on the base 20 to prevent the disengagement. Further, in the above-mentioned embodiment, the shaft type lock shaft 38 is shown as the fixing member for preventing the movement of the locking member. The opening of the lid 34 may be prevented by engaging with the base 20, and the point is that the fixing member is not particularly limited as long as it can engage with the base 20 and the lid 34 and prevent the opening of the lid 34. There is no.

Further, in the above-mentioned embodiment, the lock pin 43 inserted into the hole 39 is shown as the lock member for preventing the movement of the fixing member. The member may form the locking member,
The point is that the lock member 38 can be engaged with the lock shaft 38 in conjunction with the operation of the knob 41, and the form of the lock member is not particularly limited. Further, in the above-mentioned embodiment, the rotary type knob 41 is shown as the operating member for driving the lock member, but it may be a sliding type operating member, for example, the on / off movement of the first switch 31. The form of the operating member is not particularly limited as long as the lock pin 43 can be driven.

Further, in the above embodiment, the pin type operation piece 44 is shown as the operation piece which comes into contact with the fixing member, but the point is that the operation piece which comes into contact with the lock shaft 38 is essential. The form is not particularly limited. Also, in the above example,
Although the spring 46 is shown as an elastic member for urging the operation piece,
For example, a rubber material or the like may be used as long as it is an elastic body that urges the operation piece 44 in the direction of abutting the lock shaft 38.

In the above embodiment, the rotary type first switch 31 is used as the first switch interlocking with the operating member.
However, the point is that the ignition circuit can be interrupted in conjunction with the operation, and can be arbitrarily changed according to the form of the operation member. In addition, the second switch 32 interlocking with the operation piece
The same applies to, and can be arbitrarily changed according to the form of the operation piece 44. Further, in the above-described embodiment, the power supply 11 is built in the operating device 10 and the ignition current is supplied to the smoke tube 1 as an ignition signal.
An electromagnetic switch for connecting the power source and the ignition circuit to the power source on the base 20 side may be provided, and an ignition signal for turning on / off the electromagnetic switch may be transmitted from the operation device 10.

[0030]

As described above, according to the pyrotechnic ignition device of the present invention, two switches that are turned on / off in association with the movement of each member during the exchanging work of pyrotechnics are provided. Furthermore, since the movement of each member is regulated in the erroneous operation procedure, it is possible to reliably prevent accidental ignition of the pyrotechnic product even if the erroneous operation is performed, and to prompt the operator to recognize the erroneous operation. Therefore, it is possible to prevent the occurrence of a situation such as having to perform replacement work with a new smoke tube again during replacement work, and it is possible to ensure reliable replacement work of pyrotechnic products.

[Brief description of drawings]

FIG. 1 is an overall perspective view showing a pyrotechnic ignition device according to an embodiment of the present invention.

FIG. 2 is a view taken in the direction of the arrow A in FIG.

FIG. 3 is a conceptual diagram showing a circuit configuration of a pyrotechnic ignition device according to an embodiment of the present invention.

FIG. 4 is a cross-sectional view illustrating an operation when the lid is closed.

FIG. 5 is a cross-sectional view illustrating an operation with a lid opened.

FIG. 6 is a cross-sectional view illustrating an operation at the time of erroneous operation.

FIG. 7 is a cross-sectional view illustrating an operation at the time of an erroneous operation.

FIG. 8 is an overall perspective view showing a conventional pyrotechnic ignition device.

FIG. 9 is a conceptual diagram showing a circuit configuration of a conventional pyrotechnic ignition device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 smoke tube (pyrotechnic), 10 operating device, 20 base, 31 first switch, 32 second switch, 34 lid (locking member), 38 lock shaft (fixing member), 39 lock pin (locking member) , 44 operation piece, 46 spring (elastic member)

Claims (1)

[Claims] 1. A base having an ignition circuit for holding a pyrotechnic and igniting the pyrotechnic, and an operating device connected to the base via a cable for transmitting an ignition signal to the ignition circuit. In the provided pyrotechnic ignition device, a locking member that engages the pyrotechnic product to prevent the pyrotechnic product from coming off the base, and an engaging member that engages the pyrotechnic product A fixing member that prevents the locking member from moving, a locking member that engages the fixing member to prevent the fixing member from moving, and a fixing member that is connected to the locking member and drives the locking member. An operating member that releases the engagement, an operating piece that abuts the fixed member while the lock member is engaged with the fixed member, an elastic member that urges the operating piece toward the fixed member, and an ignition circuit inside the ignition circuit. The operation member is provided so that the operation member releases the engagement between the lock member and the fixed member. And a second switch provided in the ignition circuit for interrupting the circuit in conjunction with movement of the operation piece beyond the contact position with the fixed member. A pyrotechnic ignition device characterized in that